<div is="j-appbar" :title="title">
  <j-button slot="left" width="34" height="44" @action="goBack">
    <i class="iconfont icon-back j-font-primary"></i>
  </j-button>
  <j-button slot="right" width="34" height="44" @action="share">
    <i class="iconfont icon-more j-font-primary"></i>
  </j-button>
</div>